Factory customized heat resistant high strength strong permanent sintered ndfeb arc segment magnet

Product Overview & Application Fields

This Factory customized  superior holding capability heat resistant high strength strong permanent sintered ndfeb compact arc segment magnet is specifically engineered for demanding high-torque electric motor applications such as power tools, cordless drills, and industrial automation systems. Manufactured from premium-grade neodymium-iron-boron (NdFeB) material, this Factory customized  high remanence heat resistant high strength strong magnetic force permanent sintered ndfeb arc segment magnet offers exceptional magnetic energy density and superior coercivity, ensuring stable operation under elevated temperatures and high rotational speeds.

The Factory customized high adhesive force heat resistant high strength strong permanent sintered ndfeb arc segment magnet is precision-shaped into an arc profile, allowing optimal alignment within rotor or stator assemblies to enhance torque efficiency and dynamic balance. A dual-layer protective coating, featuring nickel plating and optional epoxy resin, provides excellent resistance to corrosion, oxidation, and mechanical wear—ideal for harsh working environments.

Application Fields

. E-Mobility (Electric Mobility)

Includes: electric scooters, electric bicycles, self-balancing vehicles, and wheelchair drive systems.
Key Feature: Requires high energy density magnets to reduce overall weight while ensuring stable and efficient power output.

 Robotics & Automation

Applications: used in miniature servo motors, actuators, or robotic joint motors.
Requirements: Must provide high consistency, thermal stability, and reliable magnetic control performance in precision automation systems

Technical Specifications

- Product Name: Factory customized heat resistant high strength strong permanent sintered ndfeb arc segment magnet

- Magnet Grade: N42 (Br ≥12.9 kGs, Hcj ≥12 kOe)  

- Dimension: 10mm x 10mm x 5mm

- Dimensional Tolerance: +/-0.05 

- Operating Temperature: ≤80°C (High-temp versions available)  

- Density: ≥7.5 g/cm³  

- Surface Magnetic Field: 2,800 Gs  

- Magnetic Flux : 2.0 mWb  (Fluxmeter-tested)  

Surface Treatment & Coating Technology

To enhance Magnets’corrosion resistance, surface quality, and magnetic stability, the following treatments are used:

Edge Reinforcement: Laser cladding with nickel-based alloy at magnet seams (prevents electrochemical corrosion)

Edge Rounding: Reduces magnetic field distortion

Default Coating: Triple layer Ni-Cu-Ni (customizable)

Standard Thickness: Ni (3μm) + Cu (5μm) + Ni (4μm)

Optional Coatings: Gold or silver plating for better conductivity and corrosion resistance

Appearance & Dimensional Inspection

Visual Inspection: Under standardized lighting, trained QC staff check for cracks, chipping, inclusions, pores, or oxidation.

Automated Intelligent Inspection: High-speed cameras with AI algorithms detect and reject defects (e.g., cracks, scratches, discoloration) and dimensional anomalies, improving yield and reducing human error.

Magnetic Flux Consistency Test: Fluxmeters or Hall-effect testers measure magnetic flux across batches to ensure uniform performance in end-user applications.

Packaging & Transportation

Defect Elimination: 100% inspection using calipers, projectors, visual checks, and automated systems to reject cracked, chipped, oxidized, or coated-defective magnets.

Uniform Magnetization & Structured Arrangement: Magnets are uniformly magnetized and arranged for optimal packaging based on customer requirements to ensure performance and facilitate automated assembly.

Vacuum Sealed Packaging: Multi-layer vacuum sealing with moisture barriers, desiccants or nitrogen, prevents corrosion and magnetic interference during storage and shipping.

Customized Outer Packaging: Shock-proof, moisture-resistant, and anti-magnetic leakage packaging (e.g., multilayer cartons, plastic boxes, metal shielding) ensures compliance with international logistics standards. Each box includes a product list, labels, and tracking codes.

We know logistics is more than moving goods — it’s about delivering your promise. Our trusted solutions offer:

Global shipping coverage

Real-time tracking from origin to destination

Enhanced safety at every stage

Dedicated service with customized shipping plans

With our robust land, sea, and air network, your business moves faster, safer, and with complete confidence.

Why Choose us ？

Dongguan Jinconn New Material Holdings Co., Ltd. is a publicly listed enterprise offering integrated R&D, manufacturing, and sales of rare earth magnets. Based in Xiaohe Industrial Zone, Daojiao Town, Dongguan, we serve clients across China and globally.

20+ years of magnet manufacturing expertise

Strict quality control & customization capability

Multilingual technical support with global delivery

RoHS and REACH compliant

Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!

 Usage Precautions？

⚠ Safety & Handling Guidelines

Handle with care: Neodymium magnets are brittle and can chip or crack if dropped or impacted.

Avoid injury: Always slide magnets apart—do not force or pry them to separate.

Check polarity before use: Incorrect installation may cause malfunction or damage to equipment.

Store properly: Keep in a dry, neutral environment; avoid contact with moisture, acids, or corrosive substances.

Keep away from sensitive electronics: Do not place near hard drives, magnetic cards, pacemakers, or similar devices.

Customization & Services

Customizable magnet dimensions, geometry, and surface coatings (including layer count, thickness, and color)

Precision magnetization orientation and adjustable magnetic field intensity

Optional laser marking for logos, part numbers, or traceability codes

Specialized packaging and pull-force testing tailored to your application needs

With deep expertise in magnetic materials, we deliver solutions for industries like EVs, smart manufacturing, and electronics. Our strong technical capabilities and product consistency have earned the trust of customers worldwide.

If you have any magnet-related needs, we offer free customized magnet services. Please feel free to contact us at any time.

Contact Us：
 Phone/WhatsApp/WeChat: +86 13829120676
 Email: Info@jinconn.com
 Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China.